ITU-T SERIES Q SUPP 14-1999
技术报告TRQ.2120: 协调呼叫控制和承载控制信令要求-第3方协调呼叫和承载控制 Q系列:交换
Technical Report TRQ.2120: Coordinated Call Control and Bearer Control Signalling Requirements - Third Party Coordinated Call and Bearer Control Series Q: Switching and Signaling Study Group 11